MARIETTA 3 NNW, WASHINGTON

Period of Record General Climate Summary - Heating Degree Days

Station:(455028) MARIETTA 3 NNW
From Year=1913 To Year=1958
Heating Degree Days for Selected Base Temperature (F)
Base Jan. Feb. Mar. Apr. May Jun. Jul. Aug. Sep. Oct. Nov. Dec. Annual
65 866 703 654 476 323 175 95 100 236 446 642 794 5512
60 711 562 499 327 175 59 15 16 103 293 492 639 3890
57 618 478 406 239 99 21 2 3 48 204 402 546 3065
55 556 421 345 183 59 9 1 1 24 150 342 484 2573
50 402 282 196 67 8 0 0 0 2 52 199 330 1539
Heating Degree Day units are computed as the difference between the base temperature and the daily average temperature. (Base Temp. - Daily Ave. Temp.) One unit is accumulated for each degree Fahrenheit the average temperature is below the base temperature. Negative numbers are discarded. Example: If the days high temperature was 65 and the low temperature was 31, the base 50 heating degree day units is 50 - ((65 + 31) / 2) = 2. This is done for each day of the month and summed.
Table updated on Oct 31, 2012
Months with 5 or more missing days are not considered
Years with 1 or more missing months are not considered

Western Regional Climate Center, wrcc@dri.edu